Mechanism fob obtaining rotary motion from reciprocating- rectilinear



THTMP AMA PKUTB-LITHU. 0. NY. (OSBORN Z'S PROCESS) UNITED STATES PATENT OFFICE.

ALVEN K. GILMORE, OF BATH, MAINE.

MECHANISM FOR OBTAINING ROTARY MOTION FROM RECIPROCATING RECTILINEAR MOTION.

Specification of Letters Patent No. 23,461, dated April 5, 1859.

To all whom it may concern:

Be it known that I, ALvEN K. GILMORE, of Bath, in the county of Sagadahoc and State of Maine, have invented a new and useful Mechanism for Obtaining Rotary Motion from a Reciprocating Rectilinear Motion; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which Figure 1, is a top view; Figs. 2 and 3, side elevations, Fig. l, a front end View, and Fig. 5, a vertical and transverse section of my invention as applied to a rotary shaft. Fig. G, is a side view of one of the pulley sectors and its double pawl together with its main and disk wheels to be hereinafter described.

My invention is intended as a substitute for a crank as usually employed on the main driving shaft and turned by the piston and connecting rod of a steam engine or other suitable mechanism.

In the drawings, A, denotes a bifurcated slider attached to a rod, B, which may be supposed to represent the piston rod of a steam engine. This slider embraces two pulley sectors C, D, which are affixed to a shaft, E and arranged with respect to one another and a wheel, F, as shown in the drawings. Each sector as represented is semi-circular or thereabout and has in its periphery two grooves for the reception of belts a, al, or a2, a3. The belts of each sector are respectively attached at or near the two extremities of its arc, and from thence they pass around the sector in opposite directions and are attached at points b, b, of each bar c, of the forked slide A, the whole being as shown in the drawings.

In respect to the wheel, E, each side of it is recessed for the reception of a double or lever pawl G, or H. (See Figs. Q, 3, and 5.) This double pawl turns on a fulcrum f, extending from or carried by an ear g, that projects from the middle of the chord bar of each pulley sector. Furthermore, within each recess h., of the wheel F and so as to turn freely upon the shaft E there is a disk or wheel I, see Figs. 2, 3, and 5, the said disk wheel being provided with two stops or studs c', 7e, arranged ,directly under the lever or double pawl Gr or H. The wheel I, rests against a friction wheel Z, or shoulder applied to the shaft E. By turning the disk a short distance in one direction on the said shaft, one end of the double pawl will be forced against the inner peripliery of the rim of the wheel F. S0, by revolving the disk in the opposite direction, a short distance, the other end of the double pawl will be forced into contact with the inner periphery of the rim, the first end being in the meantilne moved away therefrom. For the purpose of so movin the two disks I, I, I employ mechanism as follows, that is, I apply to each disk and to its adjacent pulley sector, a lever fm., having its fulcrum projecting from the pulleysector. The tail or longer arm of the said lever extends through the bent arm o, projecting from one of two tubular sliders y), p, placed upon the shaft F,

as shown in Fig. 1. Each of said sliders has a groove r, extending around it and for the reception of one of two forked arms s, s, projecting from a slide rod t, arranged as shown in the drawings. A shifting lever u is applied to the said slide rod for the purpose of enabling a person to impart motion thereto in either direction longitudinally. lhen the shifting lever stands vertically the two double lever pawls Gr, H, are entirely out of Contact with the rim of the driving wheel F but when the said shifting lever is inclined in either direction from the vertical, the two pawls will move in contact with the said rim. Under these latter circumstances, if we impart to the rod B, and the slider A, a reciprocating rectilinear motion, the consequence will be that while the slider is being moved forward, a partial rotary motion of the wheel F, and the shaft E, will take place in consequence of the pressure and rotary movement of one of the double pawls the other of the said pawls during the said period of time being released from the rim of the wheel and moved around into a position ready for action upon the wheel when the slider A, is being moved in the opposite direction.

From the above, it will be seen that the alternate movements of the slider A, will produce a continued rotary movementof the shaft in one direction; also that such direction may be reversed by moving the shifting lever u, over to the opposite side of the vertical. By means of the studs or stops z', 71:, and their disk I, the double pawls are guided while being moved in either one direction or the other toward the rim of the Wheel F, and furthermore, the inertia of the disk serves to throw the pawl out of action upon the rim.

Having thus described my invention for converting a reciprocating rectilinear motion into a vertical one, what I claim isl. The combination of the bifurcated slider Antvvo pulley sectors C, D, their double paWls G, H (or mechanical equivalents therefor) and the Wheel F, the Whole being arranged, connected, appliedVV to one shaft E, and made to operatev substantially in manner and for the purpose as hereinbefore set forth.

2. I also claim in combination With the paWls G, H, and their disk Wheels, I, I, the

disk moving mechanism consisting of the levers m, m, bent arms o, o, sliders p p, forked arms s, s, slide rod t, and shifting lever u, combined and arranged substantially as hereinbefore explained.

3. I also claim in combination With each double paWl G, H, and the shaft E, a disk or Wheel I, having studs or stops z', 7c, and being applied to the shaft and the friction `Wheel Z, substantially as and for the pur- 1Witnesses R. H. EDDY, F. R. HALE, 

